Add cirros 0.5.1 image support

Also issue with test-requirements was fixed

Related-prod: PROD-35624
Change-Id: I6256fcfbb44e93bab5161b3d4adad2163c0a892d
diff --git a/tests/test-requirements.txt b/tests/test-requirements.txt
new file mode 100644
index 0000000..bc7dc7f
--- /dev/null
+++ b/tests/test-requirements.txt
@@ -0,0 +1,4 @@
+jsonschema
+reno
+setuptools<45.0.0
+msgpack<1.0.0